gfs: Provide a way of setting hostname/ip using option

Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
backport: Fix successful backport code-path

Check failed patch count for printing failed patches
use rm -f instead of File.unlink for now.
TODO: Figure out why File.unlink is not working.
Change brick paths

Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>